Mathematics

A real-time random number generated by measuring the quantum fluctuations of a vacuum.

This is obtained from one of two quantum random number servers:

qrng.anu.edu.au
Secure Quantum Communication group,
Centre for Quantum Computing
and Communication Technology,
Department of Quantum Sciences,
Research School of Physics and Engineering,
The Australian National University.

qrng.physik.hu-berlin.de
Nano-Optics group in association with PicoQuant GmbH,
Department of Physics,
Faculty of Mathematics
and Natural Sciences,
Humboldt University, Germany.